The Sunricher "WiFi-RF Converter" provides an IP interface to their RF-controlled LED drivers. This line is OEM'd by American Lighting under the name "TruLux".
You need to use the app to link the WiFi lighting controller with the drivers. The app gives you 8 slots to link drivers; these correspond to 8 bits worth of addressing information. This gives you the ability to control multiple drivers at once if you want.
In Savant, use address 1 for driver 1; address 2 for driver 2; address 3 for driver 1+2; address 4 for driver 3, etc. You likely want to use 1,2,4,8,16,32,64,128 for the 8 individual drivers or 255 for all.